Abstract
Data warehouses in association with On Line Analytical Processing (OLAP) can enable effective Decision Support Systems. These solutions are based on the multidimensional paradigm, which allows a multidimensional analysis of huge datasets thanks to the concepts of dimension, fact, measure and OLAP operators. Spatial OLAP (SOLAP) integrates spatial information in data warehousing and OLAP systems. In this paper, we detail all different definitions of spatial dimension, spatial measure and spatio-multidimensional operators. A panorama of conceptual SOLAP models is provided. These solutions do not completely integrate the semantic component of geographic information and the flexibility of spatial analysis. The contribution of this paper is to introduce a new paradigm for the multidimensional analysis of the geographic information: the Geographic OLAP.
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